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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2019-05-03 10:44:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-03 18:14:30 +0200 |
| commit | aac8da65174a35749fcf21dbca4c1be314b562b5 (patch) | |
| tree | 96fc66afca1fdd08e17b974e154d35c2e772deb0 /drivers/hwtracing/intel_th/intel_th.h | |
| parent | intel_th: pci: Use MSI interrupt signalling (diff) | |
| download | linux-aac8da65174a35749fcf21dbca4c1be314b562b5.tar.xz linux-aac8da65174a35749fcf21dbca4c1be314b562b5.zip | |
intel_th: msu: Start handling IRQs
We intend to use the interrupt to detect Last Block condition in the MSU
driver, which we can use for double-buffering software-managed data
transfers.
Add an interrupt handler to the MSU driver.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/intel_th/intel_th.h')
| -rw-r--r-- | drivers/hwtracing/intel_th/intel_th.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/hwtracing/intel_th/intel_th.h b/drivers/hwtracing/intel_th/intel_th.h index db3ad8ca1c48..59038215489a 100644 --- a/drivers/hwtracing/intel_th/intel_th.h +++ b/drivers/hwtracing/intel_th/intel_th.h @@ -8,6 +8,8 @@ #ifndef __INTEL_TH_H__ #define __INTEL_TH_H__ +#include <linux/irqreturn.h> + /* intel_th_device device types */ enum { /* Devices that generate trace data */ @@ -160,7 +162,7 @@ struct intel_th_driver { void (*disable)(struct intel_th_device *thdev, struct intel_th_output *output); /* output ops */ - void (*irq)(struct intel_th_device *thdev); + irqreturn_t (*irq)(struct intel_th_device *thdev); int (*activate)(struct intel_th_device *thdev); void (*deactivate)(struct intel_th_device *thdev); /* file_operations for those who want a device node */ |